Ieee Floating-Point Operations - Analog Devices ADSP-2106x SHARC User Manual

2 Computation Units
MULTIPLIER
MR2 MR1 MR0
Figure 2.1 Computation Units
This chapter covers the following topics:
• Data Formats and Rounding
• ALU Architecture and Functions
• Multiplier Architecture and Functions
• Shifter Architecture and Functions
• Multifunction Computations
• Register File and Data Transfers
2.2

IEEE FLOATING-POINT OPERATIONS

The ADSP-2106x multiplier and ALU support the single-precision
floating-point format specified in the IEEE 754/854 standard. This
standard is described in Appendix C, Numeric Formats. The ADSP-2106x is
IEEE 754/854 compatible for single-precision floating-point operations in
all respects except that:
• The ADSP-2106x does not provide inexact flags.
• NAN ("Not-A-Number") inputs generate an invalid exception and
return a quiet NAN (all 1s).
2 – 2
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PM Data Bus
DM Data Bus
REGISTER
FILE
SHIFTER
16 x 40-bit
ALU